how to validate email address domain using preg match [duplicate] - php

Question

This question already has answers here:
How to validate an Email in PHP?
(7 answers)
Closed 9 years ago.
i want to validate the email address domain using pregmatch. also the valid edu domain i inserted in email list array so when user enter the email address that entry first check in email list array. if it is available then it is validate. i am doing validation part on server side.. any help is appericiated. thanks in advanced...
<?php
$email = $_POST['email']; // get the email value
$email_exp = explode("#",$email); // split email
$email_name = $email_exp[1]; // get the domain of email address
$email_list = array("berkely.edu","ucfs.edu","udef.edu","ucms.edu","ucef.edu"); // valid edu domain
for($i=0;$i<sizeof($email_list);$i++)
{
if(in_array($email_name,$email_list))
{
if (preg_match('/^[_a-z0-9-]+(\.[_a-z0-9-]+)*#[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,3})$/', $email_name))
{
// validate email
}
}
}

Answer 1

Use filter_var, and replace the preg_match call with it.
if (filter_var($_POST['email'], FILTER_VALIDATE_EMAIL) == TRUE) {
// email is valid
}
So, the updated code will be:
<?php
$email = $_POST['email']; // get the email value
$email_exp = explode("#",$email); // split email
$email_name = $email_exp[1]; // get the domain of email address
$email_list = array("berkely.edu","ucfs.edu","udef.edu","ucms.edu","ucef.edu");
$email_is_valid = filter_var($_POST['email'], FILTER_VALIDATE_EMAIL) == TRUE;
if($email_is_valid && in_array($email_name,$email_list) ) {
// email is valid for your purposes
}